<h2 id="cargo_update_name">NAME</h2>
<div class="sectionbody">
<p>cargo-update - Update dependencies as recorded in the local lock file</p>
</div>
<div class="sect1">
<h2 id="cargo_update_synopsis">SYNOPSIS</h2>
<div class="sectionbody">
<div class="paragraph">
<p><code>cargo update [<em>OPTIONS</em>]</code></p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="cargo_update_description">DESCRIPTION</h2>
<div class="sectionbody">
<div class="paragraph">
<p>This command will update dependencies in the <code>Cargo.lock</code> file to the latest
version. It requires that the <code>Cargo.lock</code> file already exists as generated
by commands such as <a href="cargo-build.html">cargo-build(1)</a> or <a href="cargo-generate-lockfile.html">cargo-generate-lockfile(1)</a>.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="cargo_update_options">OPTIONS</h2>
<div class="sectionbody">
<div class="sect2">
<h3 id="cargo_update_update_options">Update Options</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>-p</strong> <em>SPEC</em>&#8230;&#8203;</dt>
<dt class="hdlist1"><strong>--package</strong> <em>SPEC</em>&#8230;&#8203;</dt>
<dd>
<p>Update only the specified packages. This flag may be specified
multiple times. See <a href="cargo-pkgid.html">cargo-pkgid(1)</a> for the SPEC format.</p>
<div class="paragraph">
<p>If packages are specified with the <code>-p</code> flag, then a conservative update of
the lockfile will be performed. This means that only the dependency specified
by SPEC will be updated. Its transitive dependencies will be updated only if
SPEC cannot be updated without updating dependencies.  All other dependencies
will remain locked at their currently recorded versions.</p>
</div>
<div class="paragraph">
<p>If <code>-p</code> is not specified, all dependencies are updated.</p>
</div>
</dd>
<dt class="hdlist1"><strong>--aggressive</strong></dt>
<dd>
<p>When used with <code>-p</code>, dependencies of <em>SPEC</em> are forced to update as well.
Cannot be used with <code>--precise</code>.</p>
</dd>
<dt class="hdlist1"><strong>--precise</strong> <em>PRECISE</em></dt>
<dd>
<p>When used with <code>-p</code>, allows you to specify a specific version number to
set the package to. If the package comes from a git repository, this can
be a git revision (such as a SHA hash or tag).</p>
</dd>
<dt class="hdlist1"><strong>--dry-run</strong></dt>
<dd>
<p>Displays what would be updated, but doesn&#8217;t actually write the lockfile.</p>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="cargo_update_display_options">Display Options</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>-v</strong></dt>
<dt class="hdlist1"><strong>--verbose</strong></dt>
<dd>
<p>Use verbose output. May be specified twice for "very verbose" output which
includes extra output such as dependency warnings and build script output.
May also be specified with the <code>term.verbose</code>
<a href="../reference/config.html">config value</a>.</p>
</dd>
<dt class="hdlist1"><strong>-q</strong></dt>
<dt class="hdlist1"><strong>--quiet</strong></dt>
<dd>
<p>No output printed to stdout.</p>
</dd>
<dt class="hdlist1"><strong>--color</strong> <em>WHEN</em></dt>
<dd>
<p>Control when colored output is used. Valid values:</p>
<div class="ulist">
<ul>
<li>
<p><code>auto</code> (default): Automatically detect if color support is available on the
terminal.</p>
</li>
<li>
<p><code>always</code>: Always display colors.</p>
</li>
<li>
<p><code>never</code>: Never display colors.</p>
</li>
</ul>
</div>
<div class="paragraph">
<p>May also be specified with the <code>term.color</code>
<a href="../reference/config.html">config value</a>.</p>
</div>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="cargo_update_manifest_options">Manifest Options</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>--manifest-path</strong> <em>PATH</em></dt>
<dd>
<p>Path to the <code>Cargo.toml</code> file. By default, Cargo searches for the
<code>Cargo.toml</code> file in the current directory or any parent directory.</p>
</dd>
<dt class="hdlist1"><strong>--frozen</strong></dt>
<dt class="hdlist1"><strong>--locked</strong></dt>
<dd>
<p>Either of these flags requires that the <code>Cargo.lock</code> file is
up-to-date. If the lock file is missing, or it needs to be updated, Cargo will
exit with an error. The <code>--frozen</code> flag also prevents Cargo from
attempting to access the network to determine if it is out-of-date.</p>
<div class="paragraph">
<p>These may be used in environments where you want to assert that the
<code>Cargo.lock</code> file is up-to-date (such as a CI build) or want to avoid network
access.</p>
</div>
</dd>
<dt class="hdlist1"><strong>--offline</strong></dt>
<dd>
<p>Prevents Cargo from accessing the network for any reason. Without this
flag, Cargo will stop with an error if it needs to access the network and
the network is not available. With this flag, Cargo will attempt to
proceed without the network if possible.</p>
<div class="paragraph">
<p>Beware that this may result in different dependency resolution than online
mode. Cargo will restrict itself to crates that are downloaded locally, even
if there might be a newer version as indicated in the local copy of the index.
See the <a href="cargo-fetch.html">cargo-fetch(1)</a> command to download dependencies before going
offline.</p>
</div>
<div class="paragraph">
<p>May also be specified with the <code>net.offline</code> <a href="../reference/config.html">config value</a>.</p>
</div>
</dd>
</dl>
</div>
</div>
<div class="sect2">
<h3 id="cargo_update_common_options">Common Options</h3>
<div class="dlist">
<dl>
<dt class="hdlist1"><strong>-h</strong></dt>
<dt class="hdlist1"><strong>--help</strong></dt>
<dd>
<p>Prints help information.</p>
</dd>
<dt class="hdlist1"><strong>-Z</strong> <em>FLAG</em>&#8230;&#8203;</dt>
<dd>
<p>Unstable (nightly-only) flags to Cargo. Run <code>cargo -Z help</code> for
details.</p>
</dd>
</dl>
</div>
</div>
</div>
</div>
<div class="sect1">
<h2 id="cargo_update_environment">ENVIRONMENT</h2>
<div class="sectionbody">
<div class="paragraph">
<p>See <a href="../reference/environment-variables.html">the reference</a> for
details on environment variables that Cargo reads.</p>
</div>
</div>
</div>
<div class="sect1">
<h2 id="cargo_update_exit_status">Exit Status</h2>
<div class="sectionbody">
<div class="dlist">
<dl>
<dt class="hdlist1">0</dt>
<dd>
<p>Cargo succeeded.</p>
</dd>
<dt class="hdlist1">101</dt>
<dd>
<p>Cargo failed to complete.</p>
</dd>
</dl>
</div>
</div>
</div>
<div class="sect1">
<h2 id="cargo_update_examples">EXAMPLES</h2>
<div class="sectionbody">
<div class="olist arabic">
<ol class="arabic">
<li>
<p>Update all dependencies in the lockfile:</p>
<div class="literalblock">
<div class="content">
<pre>cargo update</pre>
</div>
</div>
</li>
<li>
<p>Update only specific dependencies:</p>
<div class="literalblock">
<div class="content">
<pre>cargo update -p foo -p bar</pre>
</div>
</div>
</li>
<li>
<p>Set a specific dependency to a specific version:</p>
<div class="literalblock">
<div class="content">
<pre>cargo update -p foo --precise 1.2.3</pre>
</div>
</div>
</li>
</ol>
</div>
</div>
</div>
<div class="sect1">
<h2 id="cargo_update_see_also">SEE ALSO</h2>
<div class="sectionbody">
<div class="paragraph">
<p><a href="index.html">cargo(1)</a>, <a href="cargo-generate-lockfile.html">cargo-generate-lockfile(1)</a></p>
</div>
</div>
</div>